macbrair



No. 606,869.. A Patented July 5, 1898.

c. c. MACBRAIR. A

APPARATUS FOR COATING PAPER OR OTHER FABRICS.

(Application filed Oct. 4, 1897.)

(No Modl.)

- UNITED STATES PATENT CHARLES C. MAOBRAIR, OF CINCINNATI, OHIO,ASSIGNOR TO C. O.

MAOBRAIR a 00.,

OF SAME PLACE.

APPARATUS FOR COATING ,PAPER OR OTHER FABRICS.

srEcIFIcArmn formin g'part of I etters Patent No. ooaseauateu July 5,1898. Applioation filed October 4, 1897. Serial N- 653,989. (No model.)

To all whom it may concern; 7 Q

Be it known that 1, CHARLES C. M AOBRAIR, a citizen of the UnitedStates, residing at' Cincinnati, in the county of Hamilton and State ofOhio, have invented certain new and useful Improvements in Apparatus forCoating Paper or other Fabrics; and I do declare the following to be afull; clear, and'exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and

to the figures of reference marked thereon,

which form a part of this specification.

This invention relates to certain improvements in coating paper andother fabrics with wax, paraflin, and the like; and the object of theinvention is to improve and simplify the means for supplying the wax,paraffin, or other substance with which the paper is to be coated to thebrush or other applying device, so as to permit of effecting an economyin using the coating substance and also to permit of varying thethickness of the coating.

The invent-ion'contemplates certain novel features of the construction,combination, and arrangement of the various parts of the mechanismemployed for carrying my invention out in practice, whereby certainimportant advantages are attained, and the mechanism is made simpler andis otherwise better adapted and more convenient for use, all as will behereinafter fully set forth." A j The novel features of, the inventionWill be carefully defined in the claims.

IIeretofore in "coatingpaper and similar fabrics with wax, paraffin, andthe like it has been customary to apply the coating to the fabric bymeans of a brush or other similar applying device, as set forth in myprior Letters Patent, No. 532,172, dated J anuaryS,-

1895, the said brush being arranged to revolve in contact with a blockor supply of solid wax, paraffin, 850., so that as thebrush' of the waxor other coating substance caused not only by its being thrown off fromthe brush in minute particles, but also on account of the heating actionof the brush running in contact with the solid coating substance, whichsoftens said substance, so that too much thereof is taken up by thebrush.

In carrying out my invention I impart to the supply of coating substancewhile in a solid state and held in contact with the surface of the brushor other applying device movement in the direction in which the saidbrush is moving, so that the heating effect ofthe brush'in contact withthe paraffin is lessened, so as to prevent the wasting of the paraffin.By varying the speed with which the supply of coating substance is movedrelatively to the brush I also regulate the application of the coatingsubstance to the paper, so as to permit of coating either rough orsmooth surfaced fabrics. Byimparting movement to the supply of solidcoating substance in this manner it will be seen that the moving supplywill constantly present to the rotatory brush or applying device a freshand cool surface, so that the wax or paraflin will not become heated andsoftened by the continued frictional contact of the brush with one pointof its surface.

In the accompanying drawings I have shown an apparatus or machineconstructed according to my invention, in which- Figure 1 is a sideelevation of the machine, and Fig. 2 is a diagraphic view showing thearrangement of the coating devices. Figs. 3,

4., and 5 are similar fragmentary perspective sides of which the paperor other web to be coated is arranged to pass, said drums being drivenby gearing of any kind, and (5 6 indicate idler-rolls for holding thepaper web (indicated at 7 in the drawings) in contact with the saiddrums. Any number of idler-rolls may be employed, arranged in anydesired manner. I11 lieu of drums other forms of backing for the papermay be employed.

8 8 indicate carriages arranged on opposite sides, respectively, of thelower and upper drums at and 5, these carriages being mounted upontracks formed in the frame 1 of the machine for movement in directionssubstantially radial to the respective drums at and 5 to which they areadjacent, and upon said carriages are arranged the devices for coatingthe paper or other fabric and also the supplies of coating substance.

The carriages 8 8 and the mechanisms mounted thereon are substantiallyduplicates of one another,the object in providing two sets of carriagesand coating mechanisms being to coat both sides of the paper web 7 whichin its passage between and around the drums 4 and 5 presents one surfaceto one set of coating devices and the other surface to the other set, aswill be readily understood. Of course where but one side of the web isto be coated but one carriage and the mechanisms thereon need beemployed, the otherbeing thrown out of operation or omitted entirely.

9 9 indicate cylindrical brushes employed for applying the coatingsubstance to the web, there being, as shown, two such brushes upon eachcarriage, arranged to run in contact with the surface to be coated,although but one brush maybe used, if desired. The brushes 9 of eachpair are, as shown herein, arranged to run in a direction opposite tothe direction of movement of the web 7 to be coated, as i11- dicated bythe arrows in Fig. 2, so as to generate friction sufficient to insurethata proper coating will be imparted to the said web. The speed atwhich the brushes 0 move relatively to the web '7 may be varied, ifdesired, to suit the fabric to be coated, and in order to insure an evenand uniform coating of the web I prefer to impart endwise-reeiprocatin gmovement in opposite directions to the respective brushes of each pair,so that the coating substance carried upon the brushes is spreadtransversely across the web of fabric.

10 indicates the supply of wax, paraffin, or other solid coatingsubstance, herein shown as cast or otherwise made in the form of a rollor cylinder, having a core-like shaft mounted inbearings which arethemselves in the machine here represented mounted on the earriage S formovement toward and away from the brushes 9, so that as the wax,paraffin, or other substance is removed from said rolllike orcylindrical supply the supply may be moved so as to always be in contactwith the brushes. As herein shown, weights 11 are employed for holdingthe supply of coating material 10 in contact with the brushes 9, and

a screw 12 is provided for moving each carriage radially of itsrespective drum to regulate the pressure of the brushes upon the web 7.

In order to prevent the wasting of the supply 10 of coating substanceresulting from the engagement therewith and the consequent heatingeffect of the brushes 9, I impart movement to the roll or cylinder 10 inany desired manner. As herein shown, the core or shaft of said roll orcylinder carries a spur-wheel 10, meshing with a pinion 10, mounted on ashaft driven by a belt 10. The roll or cylinder 10 is by this meansdriven in the same direction as the brushes 9, as indicated by thearrows in Fig. 2, and the speed of said roll or cylinder relatively tothe brushes 0 may be less or greater or may be varied to suit therequirements of the work to be done. The greater the difference in speedbetween the roll or cylinder 10 and the brushes the greater will be thefrictional effect of the latter, and consequently there will beincreased feed of the coatingsubstance. In some cases the roll orcylininder 10 may be revolved in a direction opposite to that in whichthe brushes 9 move.

I11 making the brushes 9 the rolls of which they are formed are providedwith surface coatings or facings, as shown in Figs. 3, at, and 5, andsaid facings may be of different materials. As shown in Fig. 3, thebrush 9 is formed with a facing or coating of bristles l3, and, as shownin Fig. 4, the brush is formed with a facing of felt 11-. As shown inFig. 5, the brush or applying device is made with a facing of lamb skinor pelt 15, and this construction of the brush is much preferable,especially for fine work, since the hairs of the lambskin are soft andelastic and still are non-resilient, so that they do not cut into orheat the roll or cylinder 10 and do not throw off minute particles ofthe coating substance, so as to waste the same, as is the case withbristle brushes and more especially with stiff; ones.

From the above description it will be seen that the machine embodying myimprovements is of an extremely simple and efficient nature and isespecially well adapted for the purposes for which it is designed, andit will also be seen that the device is capable of considerable changewithout material departure from the principles and spirit of theinvention, and for this reason I do not wish to be understood aslimiting myself to the precise form and arrangement of the parts hereinset forth.

Having thus described my invention, I

1. In an apparatus for coating paper or other fabric, the combination ofa support over which the fabric is passed, a rotative brush arranged tocontact with the fabric passed over the support, and means for holding asupply of coating substance in. contact with the brush, said means beingmounted for other fabric,the combination of a support over which thefabric is passed, a fabric-coating device arranged to-contact with thefabric passed over said support, and means for supplying coatingsubstance to said coating device, said means being mounted fortangential movement relative to the coating device while said coatingdevice is in contact therewith, substantially as set forth.

4. In an apparatus for coating paper or other fabric,the combination ofa support over which the fabric is passed, a fabric-coating devicearranged to contact with the fabric passed over the said support, meansfor holding a supply of coating substance in contact with said coatingdevice, and mechanism for rotating said supply-holdin g means while saidcoating device is in contact with the coating substance, whereby thesupply presents a constantly-changing surface in contact with thecoating device, substantially as set forth.

5. In an apparatus for coating paper or other fabric,the combination ofa support over which the fabric is passed, a rotative brush arranged tocontact with the fabric passed over said support, means for holding asupply of coating substance in contact with the brush, said means beingmounted for movement while said brush is in contact with said supply,and mechanism to feed said supply toward said brush, substantially asset forth.

6. In an apparatus for coating paper or other fabric,the combination ofa support over which the fabric is passed, a rotative brush arranged tocontact with the fabric passed over said support, means for holding asupply of coating substance in contact with said brush, mechanism forrotating said supplyholding means while said brush is in contact withsaid supply, and means to feed the said supply toward said brush,substantially as set forth.

7. In an apparatus for coating paper or other fabrics, the combinationof a support over which the fabric is passed, a carriage movable towardand away from the support, a brush on the carriage arranged to contactwith the fabric passed over the support, means for holdinga supply ofcoating substance on the carriage for movement in contact with saidbrush and means to feed said supply toward said brush, substantially asset forth.

8. In an apparatus for coating paper or other fabric,the combination ofa support over which the fabric is passed, a rotative brush arranged tocontact with the fabric passed over said support and formed of a rollerhaving a facing of lambskin, means to hold a supply of coating substancein contact with the brush and means for moving said supply while held incontact with said brush, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES C. MACBRAIR.

Witnesses:

JOHN ELIAS J ONES, J. D. THORNE.

